Taken together, we hypothesized that quantifying the high-dimension imaging features, especially the texture-based ones, would contribute to their discriminations and potentially reduce the invasive operations for patients with NCHs. Specifically, texture-based features have been widely applied in the recognition tasks of pulmonary nodule, which could provide quantitative interrelationships between voxels and therefore capture the intra-tumoral heterogeneity ( 10– 13). Therefore, radiomics, possessing the ability to quantify the high-dimension mineable features and identify the underlying differences, appears to offer a nearly limitless supply of imaging biomarkers that could potentially improve disease diagnosis ( 6– 9).
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Therefore, for diagnostic and therapeutic purposes, these patients with non-calcified hamartoma (NCH) were susceptible to suffer from unneeded surgery or needle biopsy.ĭifferent solid tumors have different biological bases varying from the density of tumor proliferation and the tissue components, and by taking the advantages of quantitative imaging technology this intra-tumoral heterogeneity can be reflected by calculating the complicated distributions of CT attenuations, termed imaging heterogeneity ( 6, 7). Alternatively, positron emission tomography examination reached an accuracy of 81%, indicating that nearly 20% of the patients still had uptake characteristics suggesting malignancy ( 5).
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( 5) reported that only 26/42 (62%) of hamartoma patients in CT examination (calcification was found in 9 patients) were diagnosed as probably benign. However, about 35% of hamartomas lack of the appearance of fat or calcification ( 2), and the finding of fat was with little specificity in discriminating benign from malignant tumors ( 4). The presences of fat and calcification in computed tomography (CT) detection have been reported to be good indicators of pulmonary hamartoma ( 2), and nearly 45% of 89 hamartomas were diagnosed depending on needle biopsy ( 1). Patients with pulmonary hamartoma require no further treatment unless the lesion grows rapidly or the patients become symptomatic during clinical follow-up ( 2) only clinical monitoring is required for some patients with confirmed symptoms ( 3).
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